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Nice work Bruce.

It would be interesting to know how Large Fpga your CNCbrain use ? from CNC Brain OEM picture part number can't be seen, and what is this other IC in TQFP package ?

and how...

if by data format you mean FAT,NTFS, then I will not use any kind of format, because I am not using Flash cards like SD,MMC, instead I will solder Flash chip and it don't require any data formats...

This is my second fpga PCB that I made to correct all mistakes that was in previous version + this time I used real 0,4mm VIAs to route middle BGA package pins
54268

here you can see how much IOs...

chose from stellaris Cortex-M3 MCU (has hardware divide) and STM32 also new CORTEX M3 MCU just released and is really cheap, or LPC2101 70Mhz ARM7 just 3,15$, this was cheapest ARM mcu before...

Today I first got my cyclone III to work, by JTAG now I can program it and do other testings like for configuration.
but I think I will need to make one more PCB where I will correct all mistakes I...

yes I used 2 layer board and ordered in local PCB house and made 2 boards for 38$, main Idea of making 2 layers was to test how this chip will solder and how will work FPP configuration. I routed...

Today I soldered my first BGA chip in self made SMD oven, actually all this I was making past 3 months and testing it to get right soldering profile for BGA chip soldering and here are results :) ...

AVR is much faster than PIC16,18, here are some instructions in AVR that perform 2 operations like
movw r17:16,r1:r0
copy in one instruction 2 registers (moves 16bit data)
and assembly language...

Reading your tread it look like you want to make similar functionality cnc controller board, have a look at my tread.

http://www.cnczone.com/forums/showthread.php?t=26465
past two months there...

I think it is great Idea of powerstageless drives and such design offers capability to support different motor types steppers, servo, 3phase AC, I think there are lot of people who has knowledge of...

ADC noise is really low, in which layer did you rough thous ADC traces, and what was nearest layers ? was it something like
1.Ground
2.ADC
3.Ground
Or something else.

How about PC Power...

you are right about signal quality and other 4layer board benefits.
for volume production of course 4 layers board will be much better than 2 layers.
I thought that you will make first few 4 layer...

it looks great, but isn't 4 layer board too complex and expensive?
maby it could be cheaper to separate board in to stages: Power and logic and rout it in 2 layers using 2 boards and connect it...

Not all G-code but pre-processed code to speed,acceleration position command level that my software (EpiCNC) is generating (supported G01 instruction :)) and then rest of calculations will be done...

I finished missing code part for information sending by RS232 (COM port) to board and added additional Items including new Text window were you can see data that software will send (each byte is...

Past few weeks I started to make software for motion controller(fpga board) that will send information to fpga board.
main tasks that software performs are:
1. G-code instruction read (currently...

how about modular design by using separate power stage from the board then thous who have small motors could use cheaper power stage than for higher power motors + could support more motor types by...

this is my last modified stepper driver board I added opamp TL084 and comparator LM339 + 74Hc595 which I used for 4bit DAC (to use fewer fpga pins) ...

this is my last modified stepper driver board I added opamp TL084 and comparator LM339 + 74Hc595 which I used for 4bit DAC (to use fewer fpga pins) ...

Ok here is this code in 3 separate files firs 2 files I didn't change because they are main building blocks.
firs file is Edge decoder witch senses both rising,falling edges and generate impulse...

Today I made code comparison of Quadrature encoder decoder between my code and jahonen suplied code.
I made litle modification in my and jahonen code so that both code performed one operations...

Stephen

are you familiar with Alteras Nios II processor ?? my plan was first to test these PID and other algorithms by nios II and then if it will be necessary to create some hardware accelerators...

Tanks for code Janne, I just made quick look in to your code and it looks promising. Can't really say that it will work but I will try to dig in this week.
I noticed that you have coded encoder...

This week I soldered L298 dual H-bridge and today I made full-step logic with 50and 25% PWM chopping at 8Khz-2Khz frequency(for current limiting) and just tested and luckly motor was turning (at low...

Hi holger
I read that PDF and answer to this resolver question will be that I didn't thing about such resolvers because my stepper motors don't have them.

Now i will try to solder simple...

do you mean using some displays for position and speed ?? maybe later when I will have working motion controller then I could think about some displays.

past two weeks I was testing these LVDS...

First I want to build something like mesabord with step/dir input For all axes and step/dir output to motor driver. and then if all will work I will think about stand alone solution.
Past month and...

Thats true fpgas are evrywhere and becoming more popular I think reason is increasing performance and price reduction + availability and these cheep dev.kits for fast lerning and it is realy fan to...

Actel offers Fusion Starter kit in mouser.com bord itself cost 306.25$ (without programmer, ISP USB programmer FlashPro3 price is 130$ :(
here is description:...

now I finaly write some bsic test software for this RS323 comunication for PC, first i tryed codproject examples but they was for sending Text information through RS232, but I needed to send and...